Head for a hair brush



FIG. 1 is a perspective view of the head for a hair brush showing my new design;

FIG. 2 is a back end view thereof;

FIG. 3 is a side view thereof;

FIG. 4 is a top plan view thereof;

FIG. 5 is a front end view thereof; and,

FIG. 6 is a bottom plan view thereof.

The broken line disclosure of a brush handle in FIG. 1 is for illustrative purposes only and forms no part of the claimed design. 

The ornamental design for a head for a hair brush, substantially as shown and described. 